I am having the same problem. The funny thing is that it only does it when the dsl modem is on. If you start up or reboot and the modem is shut off then no problems. It you start up or reboot and the modem is on then you get the AVAST! The AAVM subsystem detected a RPC error. The operation could not be completed.

I tried the UseRAS=1 trick but it didn’t work.

Winxp up to date with service packs
using the winppoe (native). I am thinking this is part of the problem. Reason - If the modem is on at startup or reboot then you get the error and the network icon (local I think) does not come up either. If you do the trick mentioned above or start avast from the icon on the desktop and allow it to scan memory and then set the scan from disabled to standard, it will then pickup and the red X will disappear. After the red x disappears, the (local) network icon will show up and you can then connect to the internet.

I thought it was just something winxp was being crabby over. It is not a terrible inconvenience but would be nice if it could be resolved. We just make sure that winxp and avast are all up and running before turning the modem on.

Thank you for your time and attention on this matter. Will check back for further instructions or recommendations.